随着计算机技术的普及，在 20世纪 90年代初，出现了一种新的人机交互作用技术--触摸屏技术。使用者利用这种技术只要用手指轻轻地碰计算机显示屏上的图符和文字，就能实现对主机的操作，这样摆脱了键盘和鼠标操作，使人机交互更为直截了当。因此，触摸屏技术已成为当前最简 With the popularization of computer technology, in the early 1990s, a new technology of human-computer interaction-touch screen technology emerged. By using this technology, the user can touch the icons and words on the screen of the computer with his / her fingers, thereby realizing the operation of the host computer. In this way, the keyboard and the mouse can be ridden to make the human-computer interaction more straightforward. Therefore, the touch screen technology has become the most simple